Ruler



(No Model.)

N. B. WHEELER.

RULER.

110.421.338. Patented Feb. 11,1890.

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UNITED STATES i PATENT OEEIGE.

NELSON B. W'HEELER, OF MERIDEN, CONNECTICUT.

RULAER.

SPECIFICATION forming part of Letters Patent No. 421,338, dated February11, 1890.

Application filed December l1, 1889. Serial No. 333,360. (No model.)

To a/ZZ whom it may concern:

Be it known that I, NELSON B. WHEELER, a citizen of the United States,residing at Meriden, in the county of New Haven and State ofConnecticut, have invented certain new and useful Improvements inRulers; and I do declare the following to be a full, clear, and exactdescription of the invention, Vsuch aswill enable others skilled in theart to which it appertains to make and use the sam e, reference beinghad to the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification. y

My invention relates to deslerulers with or without scales. It has ablotter attachment, and its novelty consists principally inthe devicesemployed for removably securing the blotter to the ruler. Ablotting-surface on a ruler is of great value, inasmuch as the ruler maybe laid at once upon freshly-drawn lines, which in cross-ruling' wouldotherwise have to be dried or blotted first. This blotting device isalso adapted for use as an ordinary deslvblotter. My ruler is very plainand easily made and is comparatively inexpensive.

The accompanying drawings illustrate the various features of theinvention, Figure l being a perspective view showing the upper side andan end of the invention. Fig. 2 is a plan view of its lower side. Fig. 3represents the back edge with' one binder open. Fig. 4 is an end of theruler with binder open and blotter removed. Fig. 5 is an end section,enlarged, taken on the line oc a: of Fig. l.

The different parts of the invention are referred to by letters, similarletters denoting corresponding parts in the different views.

The letter A indicates a ruler made of wood or other material and havingthe beveled ruling-edge d. If desired, a scale may be made upon itsupper surface.

At either one or both ends of the ruler are out or sawed the verticallongitudinal slits B, into which one limb of the binder C is looselytted, the other limb lying in a recess d along the back edge of theruler. The binder C is made of brass or other preferred metal and isheld in place by a transverse pivotal pin c, which passes through theruler and both limbs of the binder near their ends, as shown in Fig, 3.This pin thus serves to strengthen that portion of the ruler includedbetween the slit and the ruling-edge. About this pin c the binder C maybe turned up .or down, its normal position being in line with the ruler,and having a space between its central portion and the end of the rulersufcient for one or more thicknesses of sheet blotting-paper.

One or more strips of blotting-paper are cut to tit upon the lowersurface of the ruler and to turn up over its ends. These strips e e areapplied to the ruler while the binder C isturned down and are drawn tautand securely held bypushing the binder up over the blotter and the endof the ruler. The lower edge f of the end of the ruler is chamfered offto permit the binder to pass smoothly over it, and also to allow thedrawing of the blotter-strips tightly, which a sharp edge would prevent.This tightening and fastening device is very effective when applied toonly one end of the ruler, the blotting-strips being secured at theother end by any preferred means, and the ease with which the binder isopened permits a ready exchange of fresh blotters for the soiled ones.

Having now described my invention, what I claim,and desire to secure byLet-ters Patent, 1s-

l. A ruler having a chamfered end edge, a vertical longitudinal endslit, and an end binder, one of whose limbs is loosely fitted into saidslit and whose other limb rests in. a recess at the back edge of theruler, and which, being pivotally secured to the ruler, is adapted todraw tightly and hold in place blotting-strips on the bott-omet theruler, as herein set forth.

2. A ruler A, having the side bevel a, end bevel f, end slits B, andrecess d, in combination with blotter c, secured to the ruler by binderC, pivotally held by pin c, which passes through the ruler, as hereinset forth.

In testimony whereof I affix my signature in presence of two witnesses.

NELSON' WHEELER.

Witnesses: .L

CHARLES H. SAWYEE, W. R. TYLER.

